SIMDual_Kc蒸散模型在南疆滴灌夏玉米的适用性  

Suitability of SIMDual_Kc model for summer maize with drip irrigation in the Southern Xinjiang of China

作　　者：李丰琇 刘泽龙 左顺利 LI Fengxiu;LIU Zelong;ZUO Shunli(College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumuqi 830052,China;Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention,Urumuqi 830052,China)

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]新疆水利工程安全与水灾害防治重点实验室,乌鲁木齐830052

出　　处：《农业工程学报》2025年第5期68-78,共11页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划项目(2022YFD1900405);新疆维吾尔自治区青年基金项目(2022D01B28);新疆维吾尔自治区重大科技专项(2023A02002);“新疆水利工程安全与水灾害防治自治区重点实验室”2021年开放课题(ZDSYS-JS-2021-07)。

摘　　要：为评估SIMDual_Kc模型在估算南疆滴灌夏玉米蒸发、蒸腾和蒸散量的适用性,该研究于2022年和2023年在南疆阿克苏地区开展夏玉米田间试验,分别在覆膜与裸地滴灌条件下设置4个灌水梯度。依托稳定碳同位素技术计算作物蒸腾量、水量平衡法计算作物蒸散量,构建SIMDual_Kc模型,估算覆膜与裸地滴灌条件下夏玉米蒸散量、土壤蒸发量及作物蒸腾量,结合实际观测数据对模型参数进行率定和验证。结果表明:SIMDual_Kc模型可较好地估算南疆滴灌夏玉蒸散量,实测值与模拟值有较好的一致性,覆膜和裸地滴灌夏玉米蒸散量、蒸发量和蒸腾量模拟值与实测值的决定系数为0.66~0.96,回归系数为0.86~1.13,一致性指数为0.69~0.99,均方根误差为0.14~19.41 mm,归一化均方根误差为9.63%~28.23%。适用于研究区覆膜/裸地滴灌夏玉米的SIMDual_Kc模型初期基础作物系数为0.15,中期作物系数为1.2/1.15,后期作物系数为0.50/0.45,蒸发层深度为10 mm,总蒸发水量为24 mm/22mm,易蒸发水量为9 mm。研究可为南疆夏玉米灌溉制度优化提供理论依据。The SIMDual Kc model has been widely used to implement the dual crop coefficient(Kc)approach,and then estimate the crop evapotranspiration in the water balance of soil after irrigation.This study aims to evaluate the suitability of the SIMDual Kc model for the summer maize under drip irrigation in southern Xinjiang China.The evaporation,transpiration,and evapotranspiration were also determined using the SIMDualKc model.A field experiment was conducted at the Hongqipo Forestry and Fruit Experiment Base in Hongqi Village,Wensu County,Aksu Region(E80°20′,N41°16′)in 2022 and 2023.Four gradients of irrigation were set under the conditions of plastic film mulching and bare land drip irrigation.The variety of maize was taken as the Xinyu 9.A bottomless measuring pit was also selected from the Aksu Experimental Base.A total of eight irrigations were carried out in the growth period.The amount of irrigation was calculated during the cycle using the FAO-56 Penman-Monteith model.The meteorological data was collected in the experimental area.The stable carbon isotope technique was also utilized to calculate the actual transpiration of summer maize.The water balance was obtained to calculate the crop evapotranspiration.A micro-lysimeter was also utilized to measure the evaporation in the field.The parameters of the improved model were calibrated,such as the crop plant height,leaf area index,crop root depth,and soil texture.The SIMDual Kc model was constructed to estimate the evapotranspiration,soil evaporation,and crop transpiration of summer maize under plastic film mulching and bare land drip irrigation.The results show that the SIMDual Kc model performed better to estimate the evapotranspiration of the summer maize with drip irrigation.The measured values were in better agreement with the simulated ones.The coefficient of determination between the simulated and the measured values was 0.66-0.95,in terms of the evapotranspiration,evaporation,and transpiration of summer maize with drip irrigation in the mulched and unm

关 键 词：蒸散 蒸发 蒸腾 干旱区 夏玉米 膜下滴灌 SIMDual_Kc模型 

分 类 号：S274[农业科学—农业水土工程]